Method isCanonical

Singular/dyn_modules/python/util.py:41–45

(self,var)

      var=self.mydict[var]
    return var
  def isCanonical(self,var):
    if self.canonical(var)==var:
        return True
    else:
        return False
  def all_rewritings(self,var):
    pass
  def rewrite(self, a,b):